[jerf]

I don't think it's hard to imagine why the gestural interface survives in the movies. It's very visual. The main actor is moving and full of action and may even be literally jumping around. It's as cinematic as the Hollywood OS representation of hacking is.

Meanwhile, out here in the real world, I'm a real computer programmer and my real interface is even more boring looking than a standard Windows install. Nobody's going to be mining my UI for Hollywood ideas anytime soon, despite the fact that I, on occasion, actually hack.

It's the same reason cars explode when they go over cliffs, bullets spark when they hit things, and all those other tropes.